221005552025342 has 16 divisors (see below), whose sum is σ = 401152934769120. Its totient is φ = 89145096615168.

The previous prime is 221005552025339. The next prime is 221005552025353. The reversal of 221005552025342 is 243520255500122.

It is a super-2 number, since 2×221005552025342² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221005552025296 and 221005552025305.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464297377967 + ... + 464297378442.

It is an arithmetic number, because the mean of its divisors is an integer number (25072058423070).

Almost surely, 2^{221005552025342} is an apocalyptic number.

221005552025342 is a deficient number, since it is larger than the sum of its proper divisors (180147382743778).

221005552025342 is a wasteful number, since it uses less digits than its factorization.

221005552025342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928594756435.

The product of its (nonzero) digits is 240000, while the sum is 38.

The spelling of 221005552025342 in words is "two hundred twenty-one trillion, five billion, five hundred fifty-two million, twenty-five thousand, three hundred forty-two".